Mission Critical Systems

Designing, delivering and supporting control and automation systems that must work first time, every time – for defence, national security and other high-hazard environments. Mission-critical control and automation for platforms, test facilities and secure sites Structured lifecycle from requirements through to through-life support Safety, security and availability engineered-in, not bolted on Applied Integration delivers safety-critical, high-availability control and automation systems for defence, national security and other high-hazard environments where performance cannot fail. Our solutions are engineered to operate first time, every time, combining rigorous systems engineering, secure architectures and assured delivery. We ensure safety, security and operational integrity are built-in from the very start — not added later — so your platform, facility or programme performs as intended when it matters most.

What We Deliver

Mission-critical control and automation for platforms, test facilities and secure sites

Full lifecycle delivery — from requirements capture through to through-life support

Safety, security and availability designed into every system

High-integrity PLC/SCADA, safety PLC and industrial networks

Digital twins, simulation and automated testing to de-risk commissioning

Compliance with defence, safety and cyber standards

Clear documentation and full requirements traceability

Mission Requirements & Architecture

Structured capture of operational, safety, security and performance needs

Alignment to CONOPS, safety cases and mission/test profiles

System architecture, segregation and resilience strategies

Full bi-directional traceability using tools such as Polarion

Feasibility & Optioneering

Early-stage technical and operational feasibility studies

Availability and redundancy concepts including diversity and fail-safe modes

Evaluation of commercial off-the-shelf vs bespoke solutions

Balanced trade-offs across safety, mission effectiveness, cyber resilience and lifecycle cost

Detailed Design & Engineering

High-integrity PLC, safety PLC, SCADA/HMI and network design

Secure zoning and segregation for safety, mission and support functions

Deterministic behaviour, controlled failure modes and predictable recovery paths

Design packages prepared for safety cases, approval and accreditation

Implementation, Verification & Commissioning

Factory and site acceptance testing (FAT/SAT) against verified requirements

Digital twins, simulation and automated test methods to reduce risk

Formal verification and validation aligned to defence and safety frameworks

Controlled handover into service with operator training and full documentation

Through-Life Support & Upgrades

Obsolescence management for hardware, operating systems and applications

Managed upgrades and migrations with minimal system downtime

Cyber-secure patching strategies designed for safety-critical environments

Long-term support aligned with platform, facility or mission lifecycle

Typical Mission-Critical Applications

Defence test and evaluation facilities, including ammunition handling and environmental test rigs

Platform support systems: training rigs, emulation platforms and shore-based control systems

Secure and high-hazard sites requiring critical utilities, safety and infrastructure control

Integrated mission support systems for complex trials, data acquisition and automation

Our Assurance Lifecycle

Discover & Define

Workshops, stakeholder interviews, requirements capture

Architect & Analyse

System layouts, safety/security segregation, technology selection

Design & Qualify

Detailed engineering with supporting assurance documentation

Implement & Verify

Build, integration, FAT/SAT and full V&V

Handover & Support

In-service support, upgrades and long-term lifecycle care

Talk to Our Mission-Critical Experts

Whether you’re developing a new platform, upgrading an existing system or maintaining an in-service asset, our team can help define, design and deliver a mission-critical control solution that meets your safety, security and availability requirements.

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